OCTOBER 10, 2026
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Case File

CVE-2026-86247

HIGH · CVSS 7.4 EPSS 0.22%

Source: NVD + CISA KEV + EPSS · Published 2026-09-23 · Last synced 2026-10-10

CyberRota Analysis

AI-Generated

A race condition vulnerability in Apache Tomcat Native allows for the downgrading of client certificate verification requirements in certain configurations, potentially exposing sensitive data to unauthorized access. This high-severity issue impacts versions 2.0.0 through 2.0.15 and 1.3.0 through 1.3.8, with unsupported versions also potentially affected. Organizations using these versions should prioritize upgrading to 2.0.16 or 1.3.9 to mitigate the risk.

CVE
CVE-2026-86247
Severity
HIGH
CVSS
7.4
EPSS
0.22%
Apache

Original NVD Description

Race condition within a thread vulnerability in Apache Tomcat Native allowed client certificate verification requirements to be down-graded for some configurations. This issue affects Apache Tomcat Native: from 2.0.0 through 2.0.15, from 1.3.0 through 1.3.8. Unsupported versions may also be affected. Users are recommended to upgrade to version 2.0.16 or 1.3.9, which fixes the issue.

Related CVEs

Other vulnerabilities affecting the same vendor(s)